. >>> we begin with new details on the search behind the attack in benghazi. they are expected to testify in front of two committees. this comes as he is arrested for his alleged role in the attack that killed four americans including u.s. ambassador chris stevens. molly is live in washington with the latest. hi, molly. >> hi, rick. he is a leader in the terror world. he is ambitious and very dangerous and now egyptian authorities aided by u.s. intelligence have him. officials have been tracking him for months according to the "wall street journal" and interest intensified after followers participated in the attack in benghazi, libya. he was captured in the past week or so, but we don't have details yet on how he was detained. u.s.ish ifs have not been able to interrogate him yet. here is what we know. ahmad is a former egyptian jihad member. he was released from a prison in march of 2011. he is the leader of the jamal network and has been setting up terror training camps in libya and egypt with some financial help from al-qaeda and yemen. and he was trying to